A trustee of any preneed trust, including trusts established before August 28, 2009, shall not after August 28, 2009, make any decisions to invest any trust fund with:
(1) The spouse of the trustee;
(2) The descendants, siblings, parents, or spouses of a seller or an officer, manager, director or employee of a seller, provider, or preneed agent;
(3) Agents, other than authorized external investment advisors as authorized by section 436.440, or attorneys of a trustee, seller, or provider; or
(4) A corporation or other person or enterprise in which the trustee, seller, or provider owns a controlling interest or has an interest that might affect the trustee's judgment.